<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>二级菜单</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center; 
            height: 100vh;
            margin: 0;
        }
        div{
            width: 200px;
            height: 200px;
            display: inline-block;
        }
    </style>
</head>
<body>
    <div class="d1">奶茶
        <ul>
            <li>珍珠奶茶</li>
            <li>红豆奶茶</li>
            <li>椰果奶茶</li>
        </ul>
    </div>
    <div class="d2">果茶
        <ul>
            <li>冰鲜柠檬水</li>
            <li>棒打鲜橙</li>
            <li>草莓啵啵</li>
        </ul>
    </div>
    <div class="d3">咖啡
        <ul>
            <li>美式咖啡</li>
            <li>拿铁咖啡</li>
            <li>摩卡咖啡</li>
        </ul>
    </div>
</body>
</html>